# Deactivate a Phone

* [Request Parameters](https://docs.seam.co/latest/~/revisions/DFdrUdS2jQOnbJTNDT5a/api/phones/..#request-parameters)
* [Response](https://docs.seam.co/latest/~/revisions/DFdrUdS2jQOnbJTNDT5a/api/phones/..#response)
* [Examples](https://docs.seam.co/latest/~/revisions/DFdrUdS2jQOnbJTNDT5a/api/phones/..#examples)

Deactivates a phone, which is useful, for example, if a user has lost their phone. For more information, see [App User Lost Phone Process](https://docs.seam.co/latest/~/revisions/DFdrUdS2jQOnbJTNDT5a/capability-guides/mobile-access/managing-phones-for-a-user-identity#app-user-lost-phone-process).

{% tabs %}
{% tab title="Signature" %}

```
POST /phones/deactivate ⇒ void
```

{% endtab %}
{% endtabs %}

<details>

<summary>Authentication Methods</summary>

* API key
* Client session token
* Personal access token\
  Must also include the `seam-workspace` header in the request.

To learn more, see [Authentication](https://docs.seam.co/latest/api/authentication).

</details>

## Request Parameters

**`device_id`** *String* (Required)

Device ID of the desired phone.

***

## Response

void